#pragma once
#include<stdio.h>
#include<stdlib.h>
typedef int SqNodeType;
typedef struct SNode
{
	SqNodeType data;
	struct SNode* next;
}SN;

void SqNodePrint(SN* phead);
void SqNodePushBack(SN** pphead, SqNodeType e);
void SqNodePushFront(SN** pphead, SqNodeType e);
void SqNodePopFront(SN** pphead);
void SqNodePopBack(SN** pphead);
SN* SqNodeFind(SN* phead, SqNodeType e);
void SqNodeInsert(SN** pphead, SN*pos,SqNodeType e);
void SqNodeErase(SN** pphead, SN*pos);

